GEOLOGICAL CHARACTERISTICS, METALLOGENIC MODEL AND PROSPECTING CRITERIA OF DIANZI SILVER POLYMETALLIC DEPOSITS IN HULUDAO CITY

The Dianzi Ag-polymetallic orefield in Huludao City is located on the junction of Western Liaoning platform subsidence and Shanhaiguan anteklise in Yanshan platform folded zone. The Mesoproterozoic Jixianian Wumishan Formation and Neoproterozoic Qingbaikouan Jingeryu Formation are developed in the area, dominated by NE-trending fault, with Mesozoic granite porphyry closely related to the mineralization. The favorable metallogenic condition of stratigraphy-structure-magmatite contributes to the Dianzi Ag-polymetallic deposit. Both the metallogenic models and prospecting criteria are discussed with a detailed study on the geological characteristics.